Drying-tumbler.



R. ROGST.

DRYING TUMBLER. APPLIOATIOH FILED MAY 27, 1910.

Patented Oct. 14, 1913.

3 SHEETS-SHEET 1.

DOOO OOO R. BOOST.

DRYING TUMBLER.

Patented Oct. 14, 1913.

3 BHEETSSHEET 2.

R. BOOST.

DRYING TUMBLER.

APPLIOATION FILED MAY 27, 1910.

Lwwm, Patented 0011141913.

3 SHEETSSHEET 3.

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RICHARD EOOST, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE AMERICAN LAUNDRYILVIACHINERY COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

DRYING-TUMBLER.

Specification of Letters Patent.

Patented Qct. id, 1913.

Application filed May 27, 1910. Serial No. 563,712.

To all whom it may concern Be it known that I, lirormnnlloosr, a citizenof the United States, and a resident of the city of Chicago, in thecounty of Cook and State of Illinois, have invented certain new anduseful Improvements in Drying Tumblers; and I do hereby declare that thefollowing is a full, clear, and exact description ofthe same, referencebeing had to the accompanying drawings, and to the numbers of referencemarked thereon, which form a part of this specification.

In drying tumblersfor laundries the wetit'abrics and articles areinserted in the cylinder and dried during the rotation of the cylinder.Heretofore lIldevices of this class the construction has been such thatthe oporation of drying has consumed much time owing to the fact thatthe current of air admitted into the cylinder has not been sufiicientlydiffused in the cylinder to permit all parts of the contentsto be actedupon thereby. Furthermore, in such devices a pressure blower has beenemployed and a blast of hot air forced into the cylinder so that inopening the machine the lint within the machine is blown into the room,and also in such devices as heretofore constructed, the rotatingtumbler-cylinder is not subjected for its entire extent to the heat fromthe coils and the evaporation from the drying articles is unnecessarilyslow.

The object of this invention is to aii'ord a drying tumbler soconstructed that the tumbling cylinder is inclosed. -for nearly itsentire extentwithin a ldosely fitting shield or casing through which theheat from the coils is conducted to the cylinder and within which allthe heat'delivered into the cylinder is drawn downwardly and convergedto the point of discharge.

It is also an object of the invention to afford a construction in whichthe entire cylinder and casing are at all times subjected to the sourceof heat -for their entire extent, thus utilizing the entire radiatingand conducting sur'r'ace of the casing.

It is a further object of the invention to draw the hot air from thecoils through the tumbler cylinder thereby tending to rarefy the air andgreatly facilitating vaporization from the-wet contents of the cylinder.

Tlie'invention consists in the matters here inatter described and morefully pointed out and defined in the appended claims.

In the drawings: Figure 1 is a side elevation partly broken away and insection of a device embodying my invention. Fig. 2 is an enlargedtransverse section thereof. Fig. 3 is a section on line 3-3 of Fig. 2.Fig. 4; is an enlarged detail view of the double door whereby access isallorded to the casing and cylinder. Fig. 5 is a diagranr' indercomprising, as shown, the head 7, at

each end thereof conveniently of cast metal with which the gudgeons arerespectively integrally connected, and connecting said heads are T bars8, which are arranged equal distances apart around the periphery of saidheads and with the webs thereof directed inwardly and secured on saidheads on said T bars 8, is a perforated sheet of metal 10, or othersuitable material, which forms the cylindric wall of the tumbler. Saidperforated covering may be secured in panels on said T bar so that anyone or more of said panels-may be removed to permit. the in'ser tion ofthe clothes or fabric to be dried or to permit the removal thereofwhenthe drying is completed, and any suitable means for engaging said panelor panels in place suffices.

Engaged on the heads 3, of the outer casin or sheet is an inner casing11, construct ed of sheet metal or any suitable conducting material,said shell, as shown, being with out perforations and extending fromnear the top of the cylinder downwardly around the same and thenceobliquely inwardly and downwardly to near the bottom of the outer shellor housing of the machine. Sizid shell 11, howevereis continuous at theblijttom and sides thereofand at all points 0 roughout machine, andrigidly engaged to the gudgeon 6, is journaled a shaft on which issecured a gear 13, and tight pulleys l4 and 15, and

. a loose pulley 16, the purpose being to afford a reversing drive forthe tumbler by means of belts from a common drivmg source and adapted toengage. respectivelyon the pulleys 14 and 15, one of said belts beingtwisted as is usual for reversing the rotation of laundry washingmachines and for this purpose the usual or any automatic belt shiftingmechanism may be employed to shift the driving belt from either of saidpulleys while the other of said belts on the pulley '16, drives themachine. Connected in the opposite end of the machine through the headthereof is an exhaust pipe 17, provided with a gate 18, therein. Anexhaustfan 19, is connected with said pipe to draw the moist air out ofthe machine.

A long and a comparatively broad aperture is provided through the outershell or housing of the machine and extending for the entire lengththereof, and hinged near the top of said machine is a cover 21, adaptedwhen closed to .fit to the wall of the machine approximatelycontinuously therewith and supported on said cover and spaced therefromby suitable rods or bars is an inner sheet or plate 22, which fits inand closes an aperture through the shellor casing 11 i The operation isas follows: The entire space in the bottom of the machine and below thecasing 11, is filled with steam coils, a suiiicient number thereof beinginstalled to afford the requisite temperature, the up permost of saidcoils extending well above the bottom of the cylinder. lVhcn it is desred to charge the machine the cover 21, is lifted, lifting therewith theinner cover or plate 22, and a section having been removed from thetumbler, the wet clothes or fabrics are placed in the machine and thedoor and cover again closed into place and secured. A certain portionofthe moisture, of course, drains from the goods and this drainage isassisted materially from the fact that the clothes lying upon thelongitudinal ribs in the cylinder formed by the T bars are successivelylifted and rolled from said supports to fall to the bottom of thetumbler so that a large portion of-the moisture is quickly removed.During the entire operation, however, the operation of the exhaust fanhas acted to reduce pressure by drawing the air laden with steam fromthe tumvhler and thence delivering the same outmesses 'into the cylinderfrom the top at the opening indicated by 23, and, inasmuch as the fanactscontinuously in reducing pressure in said cylinders, the lineofleast resistance for the inflowing air to reach the discharge outletisdirectly downwardly through the perforated walls of the cylinder ortumbler and also laterally and longitudinally through the aperturesunobstructed by the fabrics or laundry in the cylinder. The drawing ofthe hot air upwardly around the casing and thence downwardly through thecasing affords a double heating effect. The walls of the cylinder ortumbler and the inner casing are sufficiently near together and thespace therehetween varies progressively from the top to the bottom "tosuch an extent, as to insure the outflow of hot air through the walls ofsaid tumbler at practically all points thereof below the middle. When itis desired to remove theclothing or fabrics from the machine, the cover21, with the covering .22, which closes the easing adjacent thecylinder, is lifted, and a section of the tumbler removed, therebyexposing'the contents of the tumbler for removal.

Of course, a great advantage is found in the reduction of pressure byusing the.ex-

haust fan'instead of the blowerinasmuch as the one tends to increase thepressure in the cylinder or tumbler, thereby retarding vaporization,while the other, to the extent that it greatly reduces pressure, greatlyaids the evaporation. It also carries the lint from the machine throughthe exhaust.

Of course, details of construction may be varied, and I therefore do notpurpose limiting this application for patent otherwise. thannecessitated by the prior art.

I claim as my invention: 1

1. A drying tumbler embracing a horizontal, rotative cylinder havingperforated walls, a stationary metallic casing inclosing the same andfitting closely thereto above the middle of the cylinder and extendingwell below the cylinder, an exhaust pipe connected in the casingbelowthelcylindcr, steam coils surrouinling the bottom half of saidcasing, a jacket or housing inclosing the coils and easing,and partlyopen at the bottom, an opening in the top of the casing whereby theheated air from the coils is drawn through the cylinder and downs wardlyto the exhaust pipe and means rotating the cylinder.

tending longitudinally of the cylinder. on

noes-sea the middle thereof, a metallic housing inclosing the structureas a whole and partly open at the bottom, and a door common to thehousing and casingnear the top thereof and afi'ording access to thecylinder.

. 3. A drying device embracing a rotative perforated cylinder, arelatively tight casing surrounding the same provided with a closefitting door, steam coils partly surrounding the casing, ahousinginclosing the whole except at the bottom, a door in the side wall of thecasing, a part secured there on serving as a door for the casing and anexhaust pipe communicating with the casing.

4. A drier embracing a housing, substantially air tight except at thebottom, a casing therein afi'ording acirculating space on all sidesthereof, steam coils filling the space between said casing and housing,to approximately half the height thereof, a perforated receptacle in thecasing for the articles to be dried, an exhaust pipe connected in' thecasing below the receptacle, an exhaust fan connected therewith, saidcasing having an opening directly above the receptacle and a door commonto both the housing and casing and affording access to the receptacle.

5. An exhaust drier embracing a perforated movable receptacle forturning clothes, an exhaust chamber inclosing the same, an exhaust pipeand pump communicating with said exhaust chamber near the bottom,heating coils disposed around the chamber, a housing inclosing the wholeexcept at the bottom, said exhaust chamber having an opening in the topthereof whereby the hot air from the coils is drawn down through saidreceptacle and chamber by said exhaust) pump.

6. In a device-of the class described, a casing comprising end and sidewalls, a pertorated receptacle for turning clothes, journaled on the endwalls of the casing, a casing inclosing the receptacle and fittingclosely thereto above the middle of the cylinder and extending wellbelow the cylinder, and steam coils within the casing and partlysurrounding the receptacle for turning the clothes.

. In a device'of the class' described. a housing open at the bottom, acasing within the housing having an opening at its top,

a perforated receptacle in the casing, adapt,

ed to receive articles tobe dried and an exhaust pipe connected in thecasing below the receptacle to exhaust the an" there'trom.

8. A drier embracing a housing, a casing therein affording a circulatingspace on all sides thereoit', steam coils in the space between thehousing and the casing, a \,'llIl(lGl. having side walls consisting ofremovable perforated panels, a door in the housing and a corresponding,door in the casing atfording access to the cylinder when one of itspanels is removed.

9. A device of the class described, em bracing an outer casing and aninner casing having an opening at its top, a perforated rotativecylinder within the inner casing, steam coils in the space between theouter and inner casing adapted to heat the air in the rotative cylinder,an exhaust pipe connected in the inner casing below the cylinder, and anexhaust fan connected with said pipe adapted to draw the moist air outof the inner casing and cylinder.

10. In a device of the class described, a housing comprising end *alls,side walls and a semi-circular top wall. an inner casing engaged on theend walls of the housing having an opening at its top, a perfo ratedrotative drying cylinder within the casing, means affording access tothe interior of the cylinder, an exhaust pipe in the inner casing belowthe cylinder and an exhaust fan connected wi h the exhaust pipe adaptedto reduce the pressure within the casing and cylinder and thereby aidevaporation.

11. In a device of the class described. a housing comprising end walls,side walls, and a. semi-circular top wall, a perforated drying cylinderiournaled on the end walls of the housing, an inner casing secured tothe end walls of the housing and extending from near the top of thecylinder downwardly and around the same and then obliquely inwardl anddownwardly to near the bottom of the housing. said inner casing providedwith an opening in its {01,}, means affording access to the interior ofthe cylinder and an exhaust pipe'and tan comiccled in the casing belowthe c linder to reduce the pressure within the casing and cylinder andthereby assist in the process of drying.

12. In a device of the class described. a. drying cylinder. comprisingend walls, detachable paneled side walls, an exhaust pipe below thecylinder and a casing extending from near the top of the cylinderdownwardly and around the cylinder and then obliquely inwardly anddownwardly around the exhaust pipe.

13. In a device of the class described, an outer casing having an openbottom, a rotative perforated cylinder iournaled in said casing. anexhaust pipe beneath said cylinder. an inner casing surrounding thecylinder and the exhaust pipe. said inner casing provided with anopening at its top, and heating coils below the casing and cylinder andextending upwardly to near the middle thereof adapted to heat the airbefore it enters the cylinder.

1%. The combination with a rotative cylinder having perforated sidewalls, of a door affording a part of said side wall, a casing fittingclosely to the cylinder above the middle thereof and extending below thecylinextending upwardly to near the middle thereof, a metallic housinginclosing the structure, on all sides except the bottom and meansaffording access to the cylinder.

15. A drier embracing a housing, substan tially air-tight except at thebottom, a casing' therein affording a circulating space on all sidesthereof, a perforated receptacle in the .ca'sing for the articles to bedried, an exhaust pipe connected in the casing below the receptacle, an.exhaust fan connected therewith, said casing having an opening directlyabove the receptacle and a door common to both the housing and casingand affording access to the receptacle.

16. The combination with a rotative cylinder having perforated sidewalls, of ribs extending longitudinally of the cylinder on the innerside thereof, a casing fitting closely to the cylinder above the middlethereof and extending below the cylinder to afford an exhaust chamber,an exhaust pipe communi eating with the chamber and means exhaust ingthe air therefrom. 17. A drier embracing a housing, substantially airtight except at the bottom, a casing inclosed by the housing and havingan opening at the top thereof, steam coils arranged between said casingand housing, a perforated receptacle in the casing for the articles tobe dried, an exhaust pipe connected in the casing below the receptacleand an exhaust fan connected therewith.

18. In a device of the class described a housing, a casing engagedwithin said housing and having'an opening therein, a drying casingwithin said receptacle comprising end walls, paneled side wallsremovably secured to said receptacle and means affording access to thereceptacle.

19. A drying tumbler embracing a rotative cylinder, a casing inclosingthe same and fitting closely thereto above the middle of the cylinderand extending well below the cylinder, an-exhaust pipe connected in thecasing near'thc cylinder, heating coils surrounding a part of saidcasing, a housing inclosing the coils and casing, and partly open at thebottom, and means acting to draw heated air from the coils through thecylinder.

20. In a device of the class described, a drying rcceptacle comprisingend walls, and detachable paneled side walls, means secured within thereceptacle adapted to mix the articles to be dried, a casing sur-.rounding said receptacle and having an opening therein, heating coilsarranged about a portion of said casing, a housing inclosing said casingand cylinder and a door common to the housing and easing affordingaccess to the cylinder. l

21. In a device of the class described, a rotative cylinder havingperforated side walls, ribs on the inner side thereof, a sheet metalcasing fitting closely to a part of the.

drying receptacle, a casing fitting closely to the receptacle above themiddle thereof and extending below the receptacle to afford a chamber, ahousing inclosing the structure as a whole and provided with an openingin its bottom, and means in the housing and easing affordin access tothe receptacle.

23. In a device of the class described a relative cylinder havingperforated side walls, a casing fitting closely to the cylinder abovethe middle thereof and extending below the cylinder to afford a chamber,means exhausting the air from said chamber, a housing inclosing thestructure as a whole and provided with an opening adapted to permit theinlet of air between the housing and the casing andincans common to thehousing and easing affording access to the cylinder.

24. The combination with a rotative cylinder having side walls, of meanson the inner side thereof adapted to mix the articlcs to be dried, acasing fitting closely to a part of the cylinder and extending away fromthe remaining part of said cylindex" to afford an exhaust chamber, anexhaust pipe communicating with the chainbcr, means exhausting the airtherefrom, steam coils arranged about'a part of the casing, a housinginclosing the structure as a whole, a door common to the housing andcasing and affording access to the cylinder.

25. A device of the class described embracing a rolative cylinder, acasing inclosing the same and fitting closely thereto above the middleof the cylinder and extending below the same, an exhaust pipe connectedin the casing, heating coils surrounding a part of said casing, ahousing inclosing the coils and casing, 'andopen at the bottom, anopening in the casing Whereby the heated air from the coils is drawnthrough the cylinder to the exhaust pipe and means adapted to reversethe rotation of said cylinder.

26. A drying tumbler embracing a rotative cylinder, a casing inelosingthe same, an exhaust pipe conn'eeted in the casing, steam coilssurrounding a part of said cas- RICHARD BOOST.

ing, a housing inelosing the coils and casing, l/Vitnesses:

an opening in the top of the casing whereby the heated air from thecoils is drawn CHARLES W. HILLS, J12, LAWRENCE REmsTEIN.

Qpples of this patent-may be obtained for five cents each, by addressingthe Commissioner 0! Patents,

Washington, D. G.

